Wiktionary
n. A barbiturate drug.
Wikipedia
Butalbital is a barbiturate with an intermediate duration of action. Butalbital is often combined with other medications, such as acetaminophen (paracetamol) or aspirin, and is commonly prescribed for the treatment of pain and headache. The various formulations combined with codeine are FDA-approved for the treatment of tension headaches. Butalbital has the same chemical formula as talbutal but a different structure—one that presents as 5-allyl-5-isobutylbarbituric acid.
Usage examples of "butalbital".
Three black-coated methamphetamine tablets nestled in one quadrant of the box, sharing space with the phenobarbitals, the butalbitals and the criminals of the crew, all in a single, separate cell: the one remaining pale blue tab of acid, the four white innocuous-looking hits of phencyclidine and the three innocent Contac capsules.